Results for fuel pressure, fuel gauge, vehicle repair procedure, wheel alignment, scan for trouble codes, vehicle recall, when I push the gas pedal it putts like it is out of gas, vehicle shakes on the highway, fuel system trouble codes, spark plug specifications, scan for codes, technical service bulletin, loose or worn suspension, tires have no traction on a curve, inoperative fuel gauge

Hi Sierra.
Have the LeSabre's front and rear suspension checked for loose or worn suspension components for your clunking noise. Check the tires for uneven wear, balance and alignment. There is a technical service bulletin (TSB) that might apply. It is called "Info on popping or thunk noise...